SEC Probes Whether Two Firms
Tried 'Squeeze' in Treasury Bills

Nearly nine years after Salomon Brothers' Treasury-auction bidding scandal, the government is taking a look into another alleged manipulation in the Treasury securities market.

The Securities and Exchange Commission is leading an inquiry into whether traders at two Wall Street dealers, Warburg Dillon Read and Aubrey G. Lanston & Co., attempted a "short squeeze" in the market for Treasury bills more than a year ago,...